re-examine vs examine

re-examine and examine both are verbs.

Word	Noun	Adjective	Verb	Adverb
re-examine	No	No	Yes	No
examine	No	No	Yes	No

As verbs, examine is a hypernym of re-examine; that is, examine is a word with a broader meaning than re-examine:

Other hypernyms of re-examine include probe.

re-examine (verb)	examine (verb)
question after cross-examination by opposing counsel	consider in detail and subject to an analysis in order to discover essential features or meaning
	question closely
	question or examine thoroughly and closely
	observe, check out, and look over carefully or inspect
	put to the test, as for its quality, or give experimental use to